I have a "Woodsmith Fine Tools No. 121" that I bought from Woodsmith some years ago.
One side is graduated in sixteenths, top and bottom, and both top and bottom scales read from the left. This is a great convenience and this is my favorite 12" rule. Very easy to read (I'm 72).
The top scale on the second side is graduated in sixteenths with 0 at the center and reads out to 6" right and left. Convenient for finding the center of the face or edge of a board, but no big deal.
The bottom scale on the second side is graduated in thirty-seconds from left to right.
No metrics.
I don't know if Woodsmith still sells it, but if they do, and if I didn't already have one, I'd buy one. In fact, I'd buy it if it only had the one side with both top and bottom scales in sixteenths reading from the same end, and the other side was blank.